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S. SMITH.

PRINTING PRESS.

APPLICATION man APR. 9. 19".

1,314,025. Patented Aug. 26, 1919.

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3. SMITH.

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v APPLICATION FILED APR- 9,191]- 1,314,025. Patented Aug. 26,1919.

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8. SMITH.

PRINTING PRESS.

APPLICATION FILED APR- 9. 19!].

Patented Aug. 26, 1919.

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NN NN five/2227; Java/z Small SWAN SMITH, OF ST. PAUL, MINNESOTA.

PRINTING-PRESS.

Specification of Letters Patent.

Patented Aug. 26, 1919.

Application filed. April 9, 1917. Serial. No. 160,598.

To all whom it may concern: 1 I

Be it known that I, SWAN SMITH, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Printing-Presses, of which the following is a specification.

My invention relates to improvements in printing presses of that class in which the cylinder memberand sliding type bed are employed, the object of my invention being particularlv to provide means for reciprocating the type bed in desired unison with the rotation of the cylinder.

To this end-my invention consists in the features of construction and combination hereinafter particularlyv described and claimed.

Referring :to the drawings forming part of this application,

Figure 1 is a side elevation of my improved machine partly broken away,

Fig. 2 is a detail view of a link member showing part of the actuating mechanism for the type bed.

Fig. 3 is a similar view of Fi 1 showing the side of the machine more broken away and the parts in different position.

" Fig. 4 is a detail view of the combined gear and cam forming part of the actuating mechanism, together with a portion of the type bedin cooperation therewith. i 'Fig. 5 is a view of the parts shown in Fig. 4 taken at right angles to Fig. 4 and Fig. G'is an end view of. a machine partly broken away.

Referring to the drawings A represents the frame work of a machine upon which is slidably supported in a suitable manner the horizontal type bed B. Said bed preferably rests upon rollers 2 as shown in Fig. 6; Supported in the housing 8 forming an upwardly projecting part of the frame work is the shaft 4; of the cylinder 5.

The operatingmechanism for said cylin der forming no part of the present invem tion is not specifically shown.

The type bed is reciprocated by the following described mechanism. Mounted upon a transverse main shaft 6 ourna led in the framework of the machine is a gear wheel 7 formed around a portion of its periphery with teeth 8 which mesh with teeth are in mesh.

9 projecting downwardly from the under side of the type bed.

Also constituting a part oi? the actuating mechanism for the type bed is an arm 10 having pivotal support 11 in the base of the machine, the arm 10 at its upper end being connected through the medium of a link 1.1 with one end of an arm 12, the other end of the arm 12 being pivot-ally connected with the under side of the type bed. The arm 10 1s swung upon its'pivotal support by means of a lever arm 13 having pivotal conneclion at one end with the gear wheel 7 adjacent its outer edge and at its opposite end having pivotal connection with the arm 1.0 below the link 11.

The link 1.1 as shown in Figs. 1 and 3 has pivotal connection 14.- at its upper end with the arm 12 which is connected with the type bed, and at its lower end has pivotal connection 15 with the upper end of the main actuating arm 10. The link is formed intermediate of its end with an outward extension 16, said extension carrying at its free end an anti-friction roller 17 which projects into a slot 18 in the frame work of the machine. The slot 18 while extending, as shown, in a horizontal position is as shown partially curved and irregular to constitute an'irregular path of travel for the roller 17. The curvature .in the guideway or slot is such as to so vary the relative angularity of the link 11, to permit the arm 12 to follow the advancing bed which is controlled by the gear 7 during its engagement there with, the rate of speed of the bed being controlled solely by the gear when the teeth When the gear and bed are in contacting relation which is the actual printing stroke the bed is actuated through the gear directly from the shaft 6, the arms 13, 10 and 12 and the link 11 simply mov ing in unison with the gear and bed. \Vheu however the gear and bed are disengaged (Fig. 1), or in other words the control of the bed is transferred to the lever mechanism, the arm 13 has not yet reached dead center, relative to its point of attachment on the arm 10. The bed thereafter moves by momentum, the arm 12 being new in tension to arrest the movcn'ient of the bed, the roller 17 rolling on the downwardly curved lower wall of the slot 18, presenting resistance to the movement of the bed while the arm 13 is crossing dead center, thus affording a gradual arrest of "the forward movement of the bed. As soon as the arm 18' has crossed dead center it is placed in compression thereby transmitting the power in the shaft 6 to the arm 10, which in connection with the link 11 and arm 12 returns the bed.

The same action as hereinbefore explained occurs at the other end of the slot 18, the slot serving only, during gear and rack en-- gagcment as a guide to directthe roller 17 llltO'tlN-l end curved portion of the slot, so

that the teeth of the gear and rack will always be in meshing relation at the time of transfer from the lever mechanism to the ear Y c J s n The cylinder as shown 1n Flg. 6 also carries at one, end teeth 19 which intermesh with teeth 20 upon the upper side of the type bed to assist in moving the type bed in one direction while the cylinder is in lowered posltlon. By 'sultable mechanism,

-' not shown, the cylinder is raised so as not to interfere with the return of the type bed. I As will be evident, the lever connections with the type bed operatively effect the movement of the type bed simultaneously with the gear wheel while'the gear teeth mesh with the type bed.

The link 11', together with the slot 18 synchronizes the action of the levers with the direct action of the gear upon the type bed,

and-thus theoperation of the bed by the teeth. of the gear wheel.

gear wheel does not interfere with the levers.

As the type bed passes out of meshing rescri'bed comprising a framework and type bed supported thereby,a driving shaft and wheel supported upon said shaft, an arm having fulcrum support in the frame a lever arm connecting the free end of sald power arm with said type bed, a lever arm connecting said power arm with the rimof said wheel and means -perm1tt1ng a compensat- 1 ing movement between the lever arm. connected with said wheel and a lever'arm connected with said type bell.

2. A printing press of the classdescribed comprising a framework, a type bed slidably supported thereby, a driving shaft and wheel. supported upon said shaft, a power arm havingfulcrum support in the frame,

lever connection-between said power lever wheel supported upon said shaft a and wheel, and lever connection between said power lever and type bed and a compensating member constituting sync'hronism adjustment between the lever arm connected with the movement of said wheel and bed, the lever arm connected with said type bed, and an irregularly extending guideway for said compensating member.

3., A printing press of the class described comprising a framework type bed slidably supported thereby, a driving shaft and wheel supported upon said shaft and haw ing teeth intermeshing; with i the teeth carried by said type bed, a power lever arm having fulcrum support in said frame and connection between said power. armand wheel, connection between said power'arm and type bed and means for synchronizing an uneven movement of said power arm imparted thereto fromsaid wheel withan uneven movement .of the type bed.

' 4. A printing press of the class described comprising a framework and type bed slida bly supported thereby a driving'shaft and ower arm having fulcrum support in the rame,

a type bed and intermediate link between said power arm and type bed leverland an irregular extending guidewayfor said link.-

5; A printing press of the class described a lever arm connecting said power arm and comprising a framework a type bed slidably I supported thereby, a driving shaft and cylinder supported upon said shaft, a power arm having fulcrum support in the, frame, a lever arm connecting said power arm and the rim of said cylinder, a lever armv connected with the under side of said type bed, a link member connecting said power arm and said type bed lever arm with the irregular extending guideway for said link member and independent positive driving Igonn'e'ctionbetween said cylinder and type ed. -1 r 6. A printing press of theclass described,

comprising framework, -a type bed slidably supported thereby, a driving, shaft and gear wheel supported upon said shaft, meshing gear connection between said wheel and type bedduring a part of the rotation of said wheel, lever 'mechanism .operativelyj con-' nected with said wheel andsaid typebed,

compensating means included within said lever mechanism for synchronizmg the movement of said lever'mechanism with the movement of said gear wheel and said t pe ed V are in mesh, said. lever mechanism acting upon said type bed aftenthe iype bed is bed when the teeth of .said gear and carried out of mesh with said gear wheel to continue the movement of the type bed and return the same into meshing engagement with said: wheel. r

7 A printing press of the class described, comprising framework, a. type bed slidably supported thereby, a driving shaft and wheel supported upon said shaft, meshing connection between said wheel and type bed during a part of the rotation of said wheel, a lever mechanism operatively connected with said type bed, means for actuating said lever mechanism in synchronization with said gear and for actuating said lever mechanism after said type bed is carried out of engagement with said gear to 10 continue the movement of said type bed and to return it into engagement with said gear. In testimony whereof I afiix my signature in presence of two witnesses.

SWAN SMITH. Witnesses: 1

BEATRICE BROWN. H. SWANSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). 0. 

